Lesson Plan
Curated OER

Blind-Sided

For Teachers 3rd - 4th
Students conduct an experiment.  In this geometry lesson, students practice identifying, describing and comparing geometric solids.
Lesson Plan
Brooklyn Museum

"Workt by Hand": Hidden Labor and Historical Quilts

For Teachers 3rd - 6th
Just like a painting or the symbols on a flag, quilts can express ideas that reflect a cultural context, space, and time. The class discusses the history of quilt making throughout US history and what different types of quilts mean. They...
Lesson Plan
Willow Tree

The Pythagorean Theorem

For Students 8th - 11th Standards
There isn't a more popular geometry formula than the Pythagorean Theorem! Learners understand the special side relationships in a right triangle. They use the Pythagorean Theorem to find missing sides and to solve problems. They begin...
Instructional Video8:36
Krista King Math

Inscribed Angles of Circles

For Students 9th - 12th Standards
Relationships in circles build from the many connections made throughout the geometry course. The instructor in the video explains these connections as she builds the concept of inscribed angles. Using examples, the narrator highlights...
Instructional Video4:16
Krista King Math

Volume of Cones

For Students 9th - 12th Standards
How much ice cream can you fit into a waffle cone? Sounds like geometry! Learners explore the process for calculating the volume of a right and oblique cone in this concept video. The instructor completes three examples of unique cones...
Instructional Video8:53
Krista King Math

Naming Simple Geometric Figures

For Students 9th - 12th Standards
Mathematicians use notation for efficiency, so make your classes more efficient! The instructor explains the definition and notation for key elements of geometry such as points, lines, and planes. This is the 37th lesson is a series of...
Instructional Video1:38
Socratica

Area of a Triangle

For Students 6th - 10th
Base your calculations of the areas of triangles on their bases. An illuminating video in the Socratica Geometry playlist explains how to determine the areas of a triangle. The video uses an animation to illustrate how triangles with the...
Instructional Video10:17
Mathispower4u

Circumference, Volume of a Cone, Pythagorean Theorem (L1.5)

For Students 8th - 11th Standards
There's a formula for that. An educational video shows viewers how to apply geometry formulas to solve problems. It covers the formulas for the circumference of a circle, volume of a cone, and the Pythagorean Theorem.
Instructional Video1:31
Corbett Maths

Equations – Cross Multiplication

For Students 8th - 10th Standards
Mastering the art of solving a proportion is not only important for algebra, but it's crucial to geometry and statistics as well. A quick video demonstrates the use of cross multiplication to solve a proportion. The lesson includes...
Instructional Video1:48
Corbett Maths

Congruent and Similar Shapes

For Students 6th - 12th Standards
By definition, a congruent shape remains similar, but similar shapes may or may not be congruent. Scholars watch a video explaining the sometimes-confusing concept. Practice problems ensure pupils demonstrate their understanding to...
Instructional Video5:20
Mathispower4u

Find the Height of a Trapezoid Given Area (Example)

For Students 7th - 11th Standards
Reach new heights in your geometry knowledge. An educational video shows viewers how to find the height of a trapezoid given the area. They watch as the narrator works through an example of such a problem.
Instructional Video9:11
Corbett Maths

Algebraic Proof

For Students 8th - 12th Standards
Proofs do not exist only in geometry. The video shows the class different ways that proofs appear in algebra. Pupils work through a variety of algebraic proofs involving the divisibility of an algebraic expression or whether it is even...
Instructional Video10:31
Corbett Maths

Transformations of Graphs

For Students 9th - 12th Standards
Geometric transformations in algebra ... what? Given four transformations, the narrator explains how each affect the graph of the original function. The transformations involve translations and reflections, both horizontally and...
Instructional Video6:21
Corbett Maths

Forming Equations Involving Perimeter or Angles

For Students 6th - 8th Standards
Use perimeter and angle measures to practice solving equations. Pupils see two geometry applications of solving two-step equations. The video works one example involving perimeter and two with the sum of angles in a quadrilateral and a...
Lesson Plan
Curated OER

Pattern Block Fractions

For Teachers 4th
Fourth graders participate in a lesson that is about the finding of different fractional sizes with the help of pattern blocks. They define the vocabulary terms of numerator and denominator. The lesson also uses geometry and relates it...
Lesson Plan
Curated OER

Measuring Yourself Using the Metric System

For Teachers 9th - 10th
Students measure using the metric system. In this geometry lesson plan, students solve problems using grams, meters and liters. They convert between the US units of measurements and the Metric System.
Lesson Plan
Illustrative Mathematics

Sum of Angles in a Polygon

For Teachers 8th - 12th Standards
How can learners use algebra to solve a geometry problem? Help learners create an equation that shows the relationship between the number of sides of a polygon and the sum of the interior angles. Students are asked to divide the...
Lesson Plan
Curated OER

Point Reflection

For Teachers 7th - 9th Standards
Use this task as an exit ticket for your eight graders during the geometry unit. All they need to do is identify the coordinates of a point reflected over y=2000. 
Lesson Plan
Illustrative Mathematics

All vs. Only Some

For Teachers Pre-K - 2nd Standards
All shapes have certain defining attributes that set them apart from others. In order to understand this, young mathematicians look at examples and non-examples of triangles, rectangles, and squares, working as a whole class to create...
Instructional Video7:11
Fun Stuff To Do

Square Pyramid

For Teachers 6th - 10th
Your geometry learners will appreciate this net for a square pyramid. Copy, cut, and manipulate to explore the surface area or volume of a square pyramid.
Instructional Video7:11
Wikihow

Volume of a Pyramid

For Teachers 8th - 12th Standards
Your geometry learners will appreciate this poster explaining the volume of a square pyramid. It is simple, to the point, and includes pictures.
Lesson Plan
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1
Curated OER

How Much Folate?

For Teachers 9th - 12th Standards
This task includes scaffolding to support the introduction of the writing and graphing of linear inequalities. Then your geometry learners discover that writing down all possible combinations is not feasible so they are led to use...
Lesson Plan
Curated OER

Radical Equations

For Teachers 9th - 12th Standards
This task gives geometry learners practice in solving radical equations in one variable and zeros in extraneous solutions.
Lesson Plan
Curated OER

Why Does ASA Work?

For Teachers 9th - 10th Standards
Your geometry learners explore Angle-Side-Angle congruence in this collaborative task. The sum of the interior angles of all triangles being one hundred eighty degrees, is the key learners will discover as they explain their reasoning...

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